Instruments and Experimental Techniques

, Volume 48, Issue 4, pp 491–497

A Setup for Investigating Induced Refractive Index Change in Optical Fibers at High Temperatures

  • A. S. Bozhkov
  • S. A. Vasil’ev
  • O. I. Medvedkov
  • M. V. Grekov
  • I. G. Korolev
General Experimental Techniques


An automated experimental setup for investigating the mechanisms of refractive index change in optical fibers at high temperatures is described. A resistive furnace that allows a section of an optical fiber to be heated from room temperature to 1200°C at a given rate was developed. The results from experiments on annealing gratings formed in a germanosilicate fiber with 14 mol % GeO2 in the fiber core are presented. The temperature stability of photoinduced fiber refractive index gratings at different demarcation energies was calculated on the basis of the data obtained.


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Copyright information

© MAIK “Nauka/Interperiodica” 2005

Authors and Affiliations

  • A. S. Bozhkov
    • 1
  • S. A. Vasil’ev
    • 1
  • O. I. Medvedkov
    • 1
  • M. V. Grekov
    • 1
  • I. G. Korolev
    • 1
  1. 1.Fiber Optics Research Center, Prokhorov General Physics InstituteRussian Academy of SciencesMoscowRussia

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